21129911320

Names of 21129911320

• Cardinal: 21129911320 can be written as Twenty-one billion, one hundred twenty-nine million, nine hundred eleven thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.112991132 × 10¹⁰

Factors of 21129911320

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 104

Divisors of 21129911320

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 7 8 10 14 17 20 28 34 35 40 49 56 68 70 73 85 98 119 136 140 146 170 196 238 245 280 289 292 340 343 365 392 476 490 511 578 584 595 680 686 730 833 952 980 1022 1156 1190 1241 1372 1445 1460 1666 1715 1960 2023 2044 2312 2380 2482 2555 2744 2890 2920 3332 3430 3577 4046 4088 4165 4760 4964 5110 5329 5780 5831 6205 6664 6860 7154 8092 8330 8687 9928 10115 10220 10658 11560 11662 12410 13720 14161 14308 16184 16660 17374 17885 20230 20440 21097 21316 23324 24820 25039 26645 28322 28616 29155 33320 34748 35770 37303 40460 42194 42632 43435 46648 49640 50078 53290 56644 58310 60809 69496 70805 71540 74606 80920 84388 86870 90593 99127 100156 105485 106580 113288 116620 121618 125195 141610 143080 147679 149212 168776 173740 181186 186515 198254 200312 210970 213160 233240 243236 250390 261121 283220 295358 298424 304045 347480 362372 373030 396508 421940 425663 452965 486472 495635 500780 522242 566440 590716 608090 634151 724744 738395 746060 793016 843880 851326 905930 991270 1001560 1033753 1044484 1181432 1216180 1268302 1305605 1476790 1492120 1540081 1702652 1811860 1827847 1982540 2067506 2088968 2128315 2432360 2536604 2611210 2953580 3080162 3170755 3405304 3623720 3655694 3965080 4135012 4256630 4439057 5073208 5168765 5222420 5907160 6160324 6341510 7236271 7311388 7700405 8270024 8513260 8878114 9139235 10337530 10444840 10780567 12320648 12683020 14472542 14622776 15400810 17026520 17756228 18278470 20675060 21561134 22195285 25366040 28945084 30801620 31073399 35512456 36181355 36556940 41350120 43122268 44390570 53902835 57890168 61603240 62146798 72362710 73113880 75463969 86244536 88781140 107805670 124293596 144725420 150927938 155366995 177562280 215611340 248587192 289450840 301855876 310733990 377319845 431222680 528247783 603711752 621467980 754639690 1056495566 1242935960 1509279380 2112991132 2641238915 3018558760 4225982264 5282477830 10564955660 21129911320
• Sum of all divisors σ(n): 59713956000
• Sum of proper divisors (its aliquot sum) s(n): 38584044680
• 21129911320 is an abundant number, because the sum of its proper divisors (38584044680) is greater than itself. Its abundance is 17454133360

Bases of 21129911320

• Binary: 10011101011011100001101110000011000₂
• Hexadecimal: 0x4EB70DC18
• Base-36: 9PG7BX4

Squares and roots of 21129911320

• 21129911320 squared (21129911320²) is 446473152391064142400
• 21129911320 cubed (21129911320³) is 9433938116784031289343851968000
• The square root of 21129911320 is 145361.3130100303
• The cube root of 21129911320 is 2764.6016196859

Scales and comparisons

• 21,129,911,320 seconds is equal to 671 years, 45 weeks, 3 hours, 48 minutes, 40 seconds.
• To count from 1 to 21,129,911,320 would take you about one thousand, three hundred forty-three years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21129911320 cubic inches would be around 230.4 feet tall.

Recreational maths with 21129911320

• 21129911320 backwards is 02311992112
• The number of decimal digits it has is: 11
• The sum of 21129911320's digits is 31
• More coming soon!